Rubber or elastic vehicle tire.



W. I. KENT. RUBBER 0H ELASTIC VEHICLE TIRE. APPLICATION man DEc.29.1914.

@gy l 7a3, i Patented Apr. 29, 1919.

n IIII!IIII r creeren mm d. KENT, F BROGKLYN, NEW YORK, ASSIGNOR.TO-REVERE RUBBER CGMPANY, A. CQRPOEATIQN 0F RHODE ISLAND.

RUBBER. 0R IELSTIC VEHICLE TERE.

LEQEJL'E.

Specication of Letters Patent.

Patenten am. ea, este..

application ed December 29, 19M. Serial No. @7S/59.'

To all whom t may concern Be it known that I, WILLIAM J. KENT, a citizenof the `[United States, residing in the borough of Brooklyn, city of NewYork, county of Kings, and State of New York, have invented a certainnew and useful Improvement in Rubber or Elastic Vehicle- Tires, of whichthe following is a full, clear, and exact disclosure.

My invention relates to that class of rubber or elastic vehicle tires inwhich the elastic portion is vulcanized or secured to a metallic baseplate, particularly to those tires known as solid or block tires to beused in connection with heavy vehicles. The object of my invention is toproduce a rubber or elastic vehicle tire in which the blocks or sectionsthereof are securely fastened to the base plate so that the same willnot become separated under great stresses to which such tires aresubjected. y

For a detailed description of a preferred form of my invention,reference may be had to the following specification and to theaccompanying drawing forming a part thereof, in which:

Figure 1 is a transverse sectional View taken substantially upon theline tr- A, Fig.

2, but showin in addition the rubber block in position tlgiereon; j

Fig. 2 is a perspective view of the base' or anchoring plate showing theprojection thereon for more securely holding the rubber in position;

Fig. 3 is an enlarged sectional view of the lower central portion ofFig. 1.

Referring to the drawing, the numeral 1 indicates a block of rubber,`ofthe usual rubber composition for such purposes, which is vulcanized to abase plate 2 adapted to be Secured to the felly band 3 of a vehiclewheel. This base plate 2 may be attached to the felly band or to thefelly of a vehicle wheel in any suitable way, but for con|ven ience Ihave shown the margin of the plate 2 rovided with a series of holes 4through w ich the screws or bolts 5 may pass which are in turnscrew-threaded into the felly band 3. The base plate 2 is preferablymade of sheet metal and is provided with a series of turned-up ears orprojections 6 so arranged as to form a substantially rectangularinclosure within the margin of said base plate. These turned-up earsleave openings 7 through which the rubber of the tire may project,hereinafter to be more fully descrlbed. rllhe central portion of thebase plate 2 is also provided with a plurality of openings, such as 8,through which the rubber may project, and the underside ofthe plate 1scut away or countersunk as indicated at 9in Fig. 3. The base plate 2 isalso provided with a series of marginal grooves 10 which form ridges orbeads on the underside thereof and with transverse and longitudlnalgrooves 11, which intersect the grooves 10 and the holes 8 and alsoform' beads on the underside ofthe base plate ,2. The numeral 12indicates a piece of heavily frictioned fabric which is placed on thebase plate 2 so that the rubber which passes through the openings 7 and8 will come in contact therewith during the process of vulcanization.The method of uniting the rub ber block and the base plate 2 is asfollows:

The rubber composition is placed in a suitably shaped mold and the baseplate 2 is placed on one side thereof with the ears 6 projecting intothe mold. The piece of heavily frictioned fabric is placed on theoutside of the plate 2. The mold is then closed by a suitable coverunder pressure and the parts so assembled are then placed in thevulcanizer and vulcanized or cured.

2 is suitably treated so 'as to remove all the dirt and grease from thesurface thereof and to clean the same so as to expose the pure metal tocontact with the rubber.

rfhe construction above described results in a tire or tire block inwhich the rubber is very firmly united to the base plate, and obviatesall danger of the parts being separated during use on a vehicle wheel. Y

The under cut holes 8 and the openings 7 allow the rubber to flowthrough the same and rmly unite with the frictioned fabric, the undercutportions forming integral anchorages which add greatly to the unity ofthe connection. The beads formed by the grooves 10 and 11 separate thebase plate 2 slightly from the frictioned fabric 12 and the felly band 3thereby providing deinite bearing points and allowing the rubber to flowinto and ill the spaces between the beads, thus improving the unity ofthe connection between the rubber and the metal.

The fact that frictioned fabric is placed upon the inner surface of thebase plate, provides a lining producing a frictional en- Before beingplaced in the mold, the plate` lll@ gagement between said base plate andthe telly band, thereby eecting a solid, nonslipping joint between saiclparts and preventing the entry of dirt, water, and other foreign matter.

Having thus described my invention, what il claim and. desire to protectby A'Letters Patent is:

i. lin combination with a metallic base member having a plurality oopenings therein, a rubber body portion vulcanized to one side thereot`and` extendingthrough said openings, and pockets orme in the sideopposite the said body pbrtion and communicating withsaicl openings toform heads of rubber'extending laterally of the openlngs.

formed. in the side 2. ln an elastic vehicle tire, abase member of sheetmetal having laterally projectingtongues stamped therefrom in angularrelationship and a series of pockets opposite said tongues, and a bodypbrtion of elastic rubber compo-l sition vulcanized around said tonguesso Athat the rubber extends through the openings produced by theformation of said.

tongues and also into sai. pockets. l

Signed at 'New York., county of New York, and State of New York, this21st day of December, 1914:.

y WLLLAM J. KENT. Witnesses: FRANCIS Bom, EDWARD PWg, Veur.

